Re: Heating Helium?

>
>  I'm sure I read about this being done somewhere... Maybe it was in the US
> Navy rigids?
>
>  Or maybe I'm going mad and my memory has imploded...
>
>  Nicholas
>
> > Date: Wed, 26 Mar 2008 03:28:03 -0700
> > From: duncan.rice@...
> > To: the-list@...
> > Subject: [Airshipworld List] Heating Helium?
>
> >
> >
> > Thanks for the blog post in reply to my original question, and yes it was
> the
> > mention of superheat on the goodyear blimp blog that got me thinking about
> > this.
> >
> > I have been trawling through my recent internet history to try and find
> the
> > source of a related question, but can't seem to find it. The question...
> >
> > Why don't we use heated helium to provide increased lift?
> >
> > It would seem that, as helium is an inert gas, there would be no reason
> why
> > it couldn't be heated within an envelope. Not just in the superheat sense,
> > but in a similar way to hot-air balloons or hot-air airships - why not
> > hot-helium airships?
> >
> > Would it not be possible to increase the temperature of the lift gas in
> > proporsion to the extra lift needed based on the weight of the cargo being
> > carried?
> >
> > It seems so obvious now, there must be a reason that it wouldn't work or
> > surely we would have done it long ago.
> >
> >
> >
> > -----
> > the past, present and future of airships : http://www.blimpship.com
> > blimpship.com
> > --
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> http://www.nabble.com/A-Question-of-Temperature-tp16274781p16299635.html
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> Nabble.com.
> >
> >
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